 
 
 
15.6.3  Reducing a quadratic form
The gauss
command uses Gauss’s algorithm to write a quadratic
form as a sum or difference of squares.
- 
gauss takes two arguments:
- 
q, a symbolic expression representing a quadratic form.
- vars, a vector of variable names.
 
- gauss(q,vars) returns q written
as sum or difference of squares.
Example
 
 
